Molding flask



Aug.` 18, i925. 1,550,492-

F. M. BR'GELOW ET AL MOLDING FLASK File@ Dec. 1oP 1924 minimum Patented Aug. 18, 1925.

assurez UNITED STATES PATENT OFFICE.

FRANK IVI. BIGELOW AND ALBERT J. THROM, OE JEANNETTE, IPENNSYLVANIA.

MOLDING FLASK.

Application led December 10, 19241:.

To all whom t may concern.'

Be it known that FRANK M. BIGnLow and ALBERT J. THnoM, citizens of the United States of America, residing at Jeannette, in the county of Westmoreland and State of Pennsylvania, have invented new and useful Improvements in Molding` Flasks, of which the following is a specification.

The purpose of the present invention is to provide a flask for molding glassware, such as plates and the like and also lenses such as are used in yautomobile lamps, although not necessarily for the reason that similar lenses may be used in connection with other articles where a glass shield is necessary.

Anotherpurpose is to provide a flask including means for causing a weakened part in the glass, whereby the plate or other article to be molded may be more easily cracked from the body of the glass subsequent to the molding of the same.

Still another purpose is to provide opposed sides which are movable which not only cause weakened parts to be formed in the body of the glass but also prevent the glass from adhering to the sides of the mold.

A further purpose is thev provision of means, in ahinged two-part flask, for rotating the opposed sides of the flask in opposite directions. p

i The invention comprises further features and combinations of parts to be hereinafter set forth, shown in the drawings and claimed.

In the drawings:

Figure 1 is a top plan view of a flask wherein the opposed sides are movable in opposite directions.

Figure 2 isa view in side elevation showin@ the means for rotating the opposed sides.

ligure 3 is a vertical sectional view on line 3-3 of Figure 2.

Referring to the drawings, particularly Figures 1, 2 and 3 thereof, l designates the base of the flask, and risingy from its ends are supporting standards 2 and 3. The greater upper portion of the standard 2 is reduced, said reduced portion constituting a hinge pin for the hinge ears 4 of the opposed sides or members 5 and 6 of the flask desig nated as a whole by the numeral 7. The sides or members of the flask at positions opposite the ears l are provided with additional ears 8 and 9, which, when t-he side or member .6 is closed, register, there being Serial No. 755,009.

apertures in the ears 8 and 9 to receive a pin to lock and hold the side or member 6 in closed position.

The sides or members 5 and 6 have handles 10 which may be grasped for the purpose of opening the opposed sides or members after molding a piece of glassware, such as a plate or the like. lt is obvious that the interior of the opposed sides or members of the vflask may be any proportions and any configuration, it depending entirely upon the shape of the article to be molded or blown in the mold. The sides or members 5 and 6 have semicylindrical recesses 1l and 12 which have marginal flanges and whenthe side or member 6 of the flask is closed, the recesses 11 and 12 register, thereby forming an opening through which the molten glass passes in blowing the article to be molded.

The bottoms of the opposed sides or members of the flask are dished and are constructed in the form of spiders 13 having central bearings 14 for the shafts 15. Carried bythe inner ends of the shafts 15 and movably mounted in the dished or depressed parts of the opposed sides or members of the flaskare disks 16" and 17. These disks constitute the bottoms proper of the opposed sides or members of the flask. vThe inner or adjacent faces of the'disks 16 and 17, while preferably circular, mave have any suitable configuration. In the present instance, they have their inner or adjacent faces shaped to form the bottoms of preferably dinner plates, although they may be otherwise shaped or designed to mold or form any other figured article to be constructed of glass or similar material.

The disks 16. and 17 lit closely in the dished or depressed portions of the bottoms of the opposite sides or members of the flask, especially at the edges of the disks. The opposed sidesv or members of the flask, where the disks 16 and 17 are mounted, are pr0- vided with inwardly directed radial flanges 1 8 and where the marginal edges of the disks 16 and 17 adjoin the flanges 18, the glass forming the dinner plate or other article to be molded is somewhat weakened and when the blown article is removed, itis possible to crack the opposed molded dinner plates from the body of the glass received within the mold.

This cracking o f the plate from the body of the glass may be accomplished in any well known manner, for instance, betore the molded glass body entirely cools ott, relatively cold rings (not shown) may be placed on the opposite sides ot the glass body. Such rings may be ot a diameter' corresponding to the diameter ot the weakened portions of the glass body so that, when the rings contact with the glass, the molded plates will crack away trom the body at a point immediately adjacent the weakened parts thereof.

Keyed with the shafts 15 are opposed gears 19 and 20, the teeth of the adjacentt'aces of which mesh with a pinion Q1 rotatably supported upon an upstanding stub shaft which is carried by the Vflask menr ber or side fr suitable cotter pin 23 and washer 2l are carried by the upper terminal portion of the stub shaft to retain the pinion 21 on the shaft.

A crank handle 25 is carried by and rotatable with one end ol one ot the shaits 15 and is iixed to the gear 19 so that, by grasping the crank handle, the gear 19 is rotated and due to its meshing engagement with the pinion 21, revoluble movement is transmitted to the gear` 20. Since the disks 1G and 17 are movable with the shatts 15, the disks 1G and 17' are rotated in opposite directions when movement is imparted to the gear 19 by means ot the crank handle. Then the disks are rotated, they cause weakened portions to be formedV adjacent where the margins ot the disks are in proximity to the inner edge of the liange, so as to permit the plate to more readily crack at this juncture. The waste portions ot the glass article blown in the mold or flask may be returned to the pot ot'n'iolten glass.

The invention having been set torth, what is claimed is:

1. A molding flask for glassware blowing, consisting ot opposed hinged mold members. having sections thereof movable in planes with the opposite faces of'X the hollow molded glass body.

2. A moldingl iiask for glassware blowing, comprising opposed complemental mold members having rotating bottoms having their inner faces provided with configurations tor shaping-the article to be molded.

3. A molding iask for glassware blowing,eomprising opposed complemental mold members having rotating bottoms having their inner faces provided with configurations tor shaping the article to be molded, and means for rotating the bottoms.

et. A molding iiask tor glass blowing, comprising opposed complemental mold members with opposed complemental depressions adapted` to receive a glass body to be blown therein, the bottoms ot the depressions being separate :trom the mold members and having their adjacent tacos provided with conligurations tor shaping the articles to be cracked :trom the glass body.

5. it molding liask for glass blowing, comprising opposed complemental mold members with opposed complementaldepressions adapted to receive a glass body to be blown therein, the bottoms of the depressions being separate Jfrom the mold meinbers and having their adjacent faces provided with coniigurations for shaping the articles to be cracked irom the glass body, and means tor rotating the bottoms to not only prevent adherence ot' the glass to the adjacent taces of the bottoms but to cause a weakened portion to he created adjacent the marginal edgesl ot the bottoms.

6. A molding iiask for glass blowing comprising opposed complementalA mold' members provided with depressions, the bottoms ot the depressions being countersunk or dished and cut away, thereby causing spiders to be constructed, disks mounted` in the countersinks and rotatably supported'on the spiders andi having their adjacent faces provided with configurations to t'orm the desired contigurationson the article to be cracked from a glass body blown into the iiask, and means tor rotating'the disks in opposite directions.

7'. A; molding ask ior glass blowing, consisting ot opposed complemental mold members provided with depressions to receive a hollow glass body to be blown therein, said depressions having spiderA bottoms, disks rotatably supported on the spider bottoms and constituting the bot= toms proper ot said depressions, the opposed faces of the disks being designed' to cause the desired? eoniigura-tions to be formed on. the articles to be cracked from the opposite sides ot the glass body, and manual means tor rotating the disks 'in opposit-eY directions.

In testimonywhereot they atlix theiifsign natures.

FRANK M. BIGELOV. ALBERT J. THROM. 

